What is a natural tick flea repllent?

Hi there...unfortunately, there isn't an "effective" natural flea repellant. Some who claim they are natural contain toxic ingredients which can be very harmful to cats such as those which have garlic as an example. Garlic causes Heinz body anemia which results in a breakdown of the red blood cells. You can read more about this from this website: http://www.peteducation.com:80/article.cfm?cls=1&cat=1935&articleid=2414 Advantage, Frontline, Revolution are ideally the best at eradicating fleas even though they are not natural products. Food grade diatomaceous earth (DE) is natural to use in the home, but you have to be careful on how it is used on pets. Here's another website which shows how to use the product: http://wolfcreekranch1.tripod.com/defaq.html